+ public static IdentityValuesDTO asInstanceIdentifier(final String value, final PrefixesMaping prefixMap) {
+ String valueTrimmed = value.trim();
+ if (!valueTrimmed.startsWith("/")) {
+ return null;
+ }
+ String[] xPathParts = valueTrimmed.split("/");
+ if (xPathParts.length < 2) { // must be at least "/pr:node"
+ return null;
+ }
+ IdentityValuesDTO identityValuesDTO = new IdentityValuesDTO(value);
+ for (int i = 1; i < xPathParts.length; i++) {
+ String xPathPartTrimmed = xPathParts[i].trim();
+
+ String xPathPartStr = getIdAndPrefixAsStr(xPathPartTrimmed);
+ IdentityValue identityValue = toIdentity(xPathPartStr, prefixMap);
+ if (identityValue == null) {
+ return null;
+ }
+
+ List<Predicate> predicates = toPredicates(xPathPartTrimmed, prefixMap);
+ if (predicates == null) {
+ return null;
+ }
+ identityValue.setPredicates(predicates);
+
+ identityValuesDTO.add(identityValue);
+ }
+ return identityValuesDTO.getValuesWithNamespaces().isEmpty() ? null : identityValuesDTO;
+ }
+
+ private static String getIdAndPrefixAsStr(final String pathPart) {
+ int predicateStartIndex = pathPart.indexOf("[");
+ return predicateStartIndex == -1 ? pathPart : pathPart.substring(0, predicateStartIndex);
+ }
+
+ private static IdentityValue toIdentity(final String xPathPart, final PrefixesMaping prefixMap) {
+ String xPathPartTrimmed = xPathPart.trim();
+ if (xPathPartTrimmed.isEmpty()) {
+ return null;
+ }
+ String[] prefixAndIdentifier = xPathPartTrimmed.split(":");
+ // it is not "prefix:value"
+ if (prefixAndIdentifier.length != 2) {
+ return null;
+ }
+ String prefix = prefixAndIdentifier[0].trim();
+ String identifier = prefixAndIdentifier[1].trim();
+ if (prefix.isEmpty() || identifier.isEmpty()) {
+ return null;
+ }
+ String namespace = prefixMap.getNamespace(prefix);
+ return new IdentityValue(namespace, identifier, namespace.equals(prefix) ? null : prefix);
+ }
+
+ private static List<Predicate> toPredicates(final String predicatesStr, final PrefixesMaping prefixMap) {
+ List<Predicate> result = new ArrayList<>();
+ List<String> predicates = new ArrayList<>();
+ Matcher matcher = PREDICATE_PATTERN.matcher(predicatesStr);
+ while (matcher.find()) {
+ predicates.add(matcher.group(1).trim());
+ }
+ for (String predicate : predicates) {
+ int indexOfEqualityMark = predicate.indexOf("=");
+ if (indexOfEqualityMark != -1) {
+ String predicateValue = toPredicateValue(predicate.substring(indexOfEqualityMark + 1));
+ if (predicate.startsWith(".")) { // it is leaf-list
+ if (predicateValue == null) {
+ return null;
+ }
+ result.add(new Predicate(null, predicateValue));
+ } else {
+ IdentityValue identityValue = toIdentity(predicate.substring(0, indexOfEqualityMark),
+ prefixMap);
+ if (identityValue == null || predicateValue == null) {
+ return null;
+ }
+ result.add(new Predicate(identityValue, predicateValue));
+ }
+ }
+ }
+ return result;
+ }
+
+ private static String toPredicateValue(final String predicatedValue) {
+ String predicatedValueTrimmed = predicatedValue.trim();
+ if ((predicatedValueTrimmed.startsWith(DQUOTE) || predicatedValueTrimmed.startsWith(SQUOTE))
+ && (predicatedValueTrimmed.endsWith(DQUOTE) || predicatedValueTrimmed.endsWith(SQUOTE))) {
+ return predicatedValueTrimmed.substring(1, predicatedValueTrimmed.length() - 1);
+ }
+ return null;
+ }
+
+ public interface PrefixesMaping {
+ public String getNamespace(String prefix);
+ }
+
+ public static class PrefixMapingFromXml implements PrefixesMaping {
+ StartElement startElement = null;
+
+ public PrefixMapingFromXml(final StartElement startElement) {
+ this.startElement = startElement;
+ }
+
+ @Override
+ public String getNamespace(final String prefix) {
+ return startElement.getNamespaceContext().getNamespaceURI(prefix);
+ }
+ }
+
+ public static class PrefixMapingFromJson implements PrefixesMaping {
+
+ @Override
+ public String getNamespace(final String prefix) {
+ return prefix;
+ }
+ }
+